The case of the narrow trachea.
D005260:Female; D006801:Humans; D008875:Middle Aged; D011081:Polychondritis, Relapsing / Q000150:complications / Q000000981:diagnostic imaging*; D011859:Radiography; D014132:Trachea / Q000000981:diagnostic imaging*; D014135:Tracheal Stenosis / Q000000981:diagnostic imaging* / Q000209:etiology